Where can I buy an ocarina? And what ocarina should I buy?

I want to buy an ocarina so I can play songs from LoZ and Pokemon (and
various other songs that I cannot be bothered listing). Yet, I don't
know where to buy one from.
I've found a site called STLOcarina, but the ocarinas are expensive
and the shipping fee is too high ($30?!).
I also need to know which sort of Ocarina to buy - I was thinking a
12-hole tenor one, seeing as that's what the Zelda ocarinas on the
site seem to be.

I live in Australia.

Can someone please help me?